The Siege of Prairie du Chien was a British victory in the far western theater of the War of 1812. During the war, Prairie du Chien was a small frontier settlement with residents loyal to both American and British causes. By 1814, both nations were anxious to control the site because of its importance to the fur trade and its strategic location at the intersection of the Mississippi River and the Fox-Wisconsin Waterway, a transportation route linking the Mississippi with the Great Lakes.